On 11.04.2023 a security relevant correction has been released by SAP SE. The manufacturer resolves an issue within ABAP.
SAP Note 3269352 addresses "[CVE-2023-29189] HTTP Verb Tampering vulnerability in SAP CRM (WebClient UI)" to prevent http verb tampering with a medium risk for exploitation.
A workaround does not exist, according to SAP Security Advisory team. It is advisable to implement the correction as monthly patch process, the team suggests.
Missing authority checks are still the most common security defect related to authorizations in custom code. Since SAP uses an explicit authorization model, an authority checks must be coded in order to be executed. If an explicit check is not coded, all users have access. This type of vulnerability not only exists in SAP standard it also exists in customer coding. Check your custom developments for vulnerabilities that pose a risk to your systems. SecurityBridge helps detect code vulnerabilities before they are implemented in production.
Risk specificationSAP CRM WebClient UI allows an authenticated attacker to modify HTTP verbs in requests to the web server resulting in an HTTP Verb Tampering vulnerability.
The application now properly checks for the right usage of the HTTP Verbs.
The advisory 3269352 describes a problem within an ABAP based systems of a specific version. Affected versions are described below. ABAP software is deployed in various software components and is widely used within the SAP product portfolio.
SAP NetWeaver Application Server (formally known as SAP Web Application Server) is a building block of SAP NetWeaver. It is the foundation for most software products developed by SAP SE. SAP NetWeaver systems exist with Java and/or ABAP stacks. The advisory could be relevant for single and dual-stack ABAP installations.
The advisory is valid for
- S4FND 102 9
- S4FND 103 9
- S4FND 104 9
- S4FND 105 6
- S4FND 106 4
- S4FND 107 3
- WEBCUIF 700 4
- WEBCUIF 701 6
- WEBCUIF 730 4
- WEBCUIF 731 8
- WEBCUIF 746 8
- WEBCUIF 747 8
- WEBCUIF 748 9
- WEBCUIF 800 9
- WEBCUIF 801 9